package com.can.syn;

import lombok.experimental.Accessors;

//不安全的取钱
//两个人去银行取钱，账户
public class UnsafeBank {

    public static void main(String[] args) {
        //账户
        Account account = new Account(100,"结婚基金");

        Drawing you = new Drawing(account,50,"你");
        Drawing girlFriend = new Drawing(account,100,"girlFriend");

        you.start();
        girlFriend.start();
    }


}


//账户
class Account{
    public int money; //余额
    public String name; //账户

    public Account(int money,String name){
        this.money = money;
        this.name = name;
    }
}

//银行:模拟取款
class Drawing extends Thread{
    Account account; //账户

    //取多少钱
    int drawingMoney;

    //现在手里有多少钱
    int nowMoney;

    public Drawing(Account account,int drawingMoney,String name){
            super(name);
            this.account = account;
            this.drawingMoney = drawingMoney;
    }

    //取钱
    @Override
    public void run() {
        synchronized (this){
            System.out.println(this);
        }
        //判断有没有钱
        if(account.money-drawingMoney<0){
            System.out.println(Thread.currentThread().getName()+"余额不足，取不了");
            //余额不够取得钱，return
            return;
        }

        //模拟延时,放大问题的发生性
        try {
            Thread.sleep(100);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

        //卡内余额 = 余额 - 取的钱
        account.money = account.money-drawingMoney;
        //手里的钱 = 手里的钱 + 去的钱
        nowMoney = nowMoney + drawingMoney;
        System.out.println(account.name+"余额为:"+account.money);
        //Thread.currentThread().getName() = this.getName,因为继承了Thread，所以有Thread的全部方法
        System.out.println(this.getName()+"手里的钱:"+nowMoney);
    }
}
